Home / 28,688.42-39,588.72-15,941.54

Finding the Fourth Proportional to 28,688.42, 39,588.72 and 15,941.54

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Solution

The fourth proportional to 28,688.42, 39,588.72 and 15,941.54 is: 21,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.42 : 39,588.72 = 15,941.54 : x
  2. Step 2: Convert to fraction form
    28,688.42/39,588.72 = 15,941.54/x
  3. Step 3: Cross multiply
    28,688.42x = 39,588.72 × 15,941.54
  4. Step 4: Simplify right side
    28,688.42x = 631,104,965.49
  5. Step 5: Solve for x
    x = 631,104,965.49/28,688.42
  6. Step 6: Final answer
    x = 21,998.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.